Flight
UAL643 24 Sep 2026
UAL643, operated by United Airlines, on 24 Sep 2026: George Bush Intcntl Houston (KIAH) to San Francisco International (KSFO), 3 legs. Scheduled and actual times are local to each airport (hover for UTC).
Leg 1 of 3estimated
PlaneTrack receiver network| Route | KIAH GEORGE BUSH INTCNTL HOUSTON → KSFO SAN FRANCISCO INTERNATIONAL |
| Status | Completed (receiver network) |
| First seen airborne | 19:00 CDT 23 Sep |
| Last seen | 10:08 PDT |
| Duration | 17h 07m |
| Aircraft | N27255 |
| Max altitude | 39,000 ft |
| Distance tracked | 1,418 nm |
Leg 2 of 3
PlaneTrack receiver network| Route | KSFO SAN FRANCISCO INTERNATIONAL → KSNA JOHN WAYNE ARPT ORANGE CO |
| Status | Completed (receiver network) |
| First seen airborne | 10:26 PDT |
| Last seen | 11:50 PDT |
| Duration | 1h 24m |
| Aircraft | N17321 |
| Max altitude | 33,000 ft |
| Distance tracked | 323 nm |
Leg 3 of 3partial
PlaneTrack receiver network| Route | KSNA JOHN WAYNE ARPT ORANGE CO → ? |
| Status | Partial record (receiver network) |
| First seen airborne | 11:50 PDT |
| Aircraft | N17321 |
| Max altitude | 39,000 ft |
Punctuality, last 30 days
| Flights | 22 |
| On time | 15 (68%) |
| Average delay | +18 min |
| Worst delay | +96 min |
In the last 30 days UAL643 departed on time (within 15 minutes) on 15 of 22 flights (68%), with an average departure delay of +18 min and a worst delay of +96 min.
Schedule, departure and arrival times from the FAA SWIM feed; aircraft, altitude and distance from the PlaneTrack receiver network. On time means a departure within 15 minutes of schedule.